Trouble importing a directx file into blender
Quite simply, the bmesh module is not available in 2.60

The issue of the error is the missing bmesh module.  Link to 2.60 API confirms that it didn't exist back then

https://docs.blender.org/api/2.60/#standalone-modules

it begins to appear circa 2.63

https://docs.blender.org/api/2.63/#standalone-modules

Look to see the version number recommended for the addon.

This one requires at least 2.63 

https://github.com/limemidolin/directX_blender/blob/master/io_directx_bel/init.py#L7

And >= 2.66 for 

https://github.com/poikilos/io_import_x/blob/master/init.py#L9